Activate Mana Crypt by tapping it, adding {C}{C}.
Cast the permanent that can be cast using {C}{C} from your hand by paying its mana cost.
Hullbreaker Horror triggers, returning Mana Crypt from the battlefield to your hand.
Cast Mana Crypt by paying {0}.
Hullbreaker Horror triggers, returning the permanent cast in step 2 from the battlefield to your hand.
Repeat.
If the permanent can be cast using {C} or less, this combo nets infinite colorless mana.

Infinite colorless mana

Infinite storm count

Permanent that can be cast using {C}{C}

Hullbreaker Horror

Mana Crypt

Cast Mana Crypt by paying {0}.
Displacer Kitten triggers, blinking Teferi.
Activate Mana Crypt by tapping it, adding {C}{C}.
Activate Teferi's second loyalty ability by removing three loyalty counters from it, returning Mana Crypt from the battlefield to your hand and drawing a card.
Repeat.

Infinite card draw

Infinite draw triggers

Near-infinite colorless mana

Near-infinite storm count

Teferi, Time Raveler

Displacer Kitten

Activate Mana Crypt by tapping it, adding {C}{C}.
Activate Grinding Station by tapping it and sacrificing Mana Crypt, causing yourself to mill three cards.
Cast Mana Crypt from your graveyard for its escape cost by exiling three cards from your graveyard.
Grinding Station triggers, untapping itself.
Repeat.

Infinite self-mill

Underworld Breach

Grinding Station

Cast Mana Crypt by paying its mana cost.
Tidespout Tyrant triggers, returning a nontoken permanent that can be cast using {C}{C} from the battlefield to your hand.
Activate Mana Crypt by tapping it, adding {C}{C}.
Cast the nontoken permanent returned in step 2 by paying its mana cost.
Tidespout Tyrant triggers, returning Mana Crypt from the battlefield to your hand.
Repeat.

Tidespout Tyrant

Activate Sol Ring by tapping it, adding {C}{C}.
Cast Mana Crypt by paying {0}.
Displacer Kitten triggers, blinking Aether Channeler.
When Aether Channeler enters the battlefield, it triggers, returning Sol Ring from the battlefield to your hand.
Activate Mana Crypt by tapping it, adding {C}{C}.
Cast Sol Ring by paying {0}.
Displacer Kitten triggers, blinking Aether Channeler.
When Aether Channeler enters the battlefield, it triggers, returning Mana Crypt from the battlefield to your hand.
Repeat.

Infinite ETB

Infinite LTB

Aether Channeler

Sol Ring

Cast Mana Crypt by paying {0}.
Displacer Kitten triggers, blinking Venser.
Venser enters the battlefield, returning Mana Crypt to your hand.
Repeat.

Venser, Shaper Savant

Announce the activation of Chromatic Star's ability, allowing you to activate mana abilities while delaying any triggered abilities until this ability has finished resolving.
Activate Mana Crypt's mana ability by tapping it, adding {C}{C}.
Activate Krark-Clan Ironworks three times by sacrificing Mana Crypt, Myr Retriever, and Krark-Clan Ironworks, adding six colorless mana.
Complete the activation of Chromatic Star by paying {1}, tapping it, and sacrificing it, adding one mana of any color.
When the artifacts go to the graveyard in steps 3 and 4, Myr Retriever triggers once, Scrap Trawler triggers four times, and Chromatic Star triggers once.
Resolve Chromatic Star's triggered ability, drawing a card.
Resolve Myr Retriever's triggered ability, returning Krark-Clan Ironworks from your graveyard to your hand.
Resolve Scrap Trawler's triggered ability from Krark-Clan Ironworks, returning Myr Retriever from your graveyard to your hand.
Resolve Scrap Trawler's triggered ability from Myr Retriever, returning Chromatic Star from your graveyard to your hand.
Resolve Scrap Trawler's triggered ability from Chromatic Star, returning Mana Crypt from your graveyard to your hand.
The final Scrap Trawler triggered ability from Mana Crypt fails to resolve due to lack of targets.
Cast Krak-Clan Ironworks, Myr Retriver, Chromatic Star, and Mana Crypt by paying seven mana.
Repeat.

Near-infinite ETB

Near-infinite LTB

Near-infinite death triggers

Near-infinite sacrifice triggers

Krark-Clan Ironworks

Scrap Trawler

Myr Retriever

Chromatic Star

Activate Mana Vault by tapping it, adding {C}{C}{C}.
Cast Mana Crypt by paying {0}.
Displacer Kitten triggers, blinking Aether Channeler.
When Aether Channeler enters the battlefield, it triggers, returning Mana Vault from the battlefield to your hand.
Activate Mana Crypt by tapping it, adding {C}{C}.
Cast Mana Vault by paying {1}.
Displacer Kitten triggers, blinking Aether Channeler.
When Aether Channeler enters the battlefield, it triggers, returning Mana Crypt from the battlefield to your hand.
Repeat.

Mana Vault

Cast Mana Crypt by paying {0}.
Displacer Kitten triggers, blinking Aether Channeler.
When Aether Channeler enters the battlefield, it triggers, returning Jeweled Lotus from the battlefield to your hand.
Activate Mana Crypt by tapping it, adding {C}{C}.
Cast Jeweled Lotus by paying {0}.
Displacer Kitten triggers, blinking Aether Channeler.
When Aether Channeler enters the battlefield, it triggers, returning Mana Crypt from the battlefield to your hand.
Repeat.

Jeweled Lotus

Activate Myr Welder using Mana Crypt's ability by tapping it, adding {C}{C}
Activate Myr Welder using Staff of Domination's first ability by paying {1}, untapping it.
Repeat.

Infinite lifegain

Infinite lifegain triggers

Infinite mana creatures you control can produce

Infinite untap of creatures you control

Myr Welder

Staff of Domination

Cast Mana Crypt by paying {0}.
Jhoira triggers, causing you to draw a card.
Activate Mana Crypt by tapping it, adding {C}{C}.
Activate Words of Wind by paying {1}, causing each player to return a permanent from the battlefield to their hand whenever you would next draw a card this turn.
Cast Sol Ring by paying {1}.
Jhoira triggers, causing each player to return a permanent from the battlefield to their hand, with you returning Mana Crypt, due to Words of Wind.
Activate Sol Ring by tapping it, adding {C}{C}.
Activate Words of Wind by paying {1}, causing each player to return a permanent from the battlefield to their hand whenever you would next draw a card this turn.
Cast Mana Crypt by paying {0}.
Jhoira triggers, causing each player to return a permanent from the battlefield to their hand, with you returning Sol Ring, due to Words of Wind.
Repeat from step 3.

Jhoira, Weatherlight Captain

Words of Wind

Activate Mana Crypt by tapping it, adding {C}{C}.
Activate Words of Wind by paying {1}.
Cast an artifact by paying {0}.
Jhoira triggers, causing each player to return a permanent they control from the battlefield to their hand due to Words of Wind, with you returning Mana Crypt to your hand.
Activate Words of Wind by paying {1}.
Cast Mana Crypt by paying {0}.
Jhoira triggers, causing each player to return a permanent they control from the battlefield to their hand due to Words of Wind, with you returning the artifact cast in step 3 to your hand.
Repeat.

Return all permanents opponents control to their owner's hand

Mass Land Denial

Etherium Sculptor

Activate Trazyn using Mana Crypt's ability by tapping it, adding {C}{C}.
Activate Trazyn using Staff of Domination's first ability by paying {1}, untapping it.
Repeat.

Trazyn the Infinite

Activate Trazyn using Mana Crypt's ability by tapping it, adding {C}{C}.
Activate Trazyn using Pili-Pala's ability by paying {2} and untapping it, adding one mana of any color.
Repeat.

Infinite colored mana

Pili-Pala

Cast Mana Crypt by paying {0}.
Displacer Kitten triggers, blinking Urza.
Urza enters the battlefield, creating a 0/0 Construct artifact creature token.
Activate Urza's second ability by tapping the Construct, adding {U}.
Mana Crypt resolves.
Activate Mana Crypt by tapping it, adding {C}{C}.
Activate Drafna's first ability by paying {1}{U}, returning Mana Crypt from the battlefield to your hand.
Repeat.
Once you have infinite colorless mana, you may get infinite blue mana by tapping Mana Crypt with Urza's ability, and you may activate Urza's last ability any number of times.

Cast all spells in your library

Infinite blue mana

Infinite tapped creature tokens

Exile your library

Drafna, Founder of Lat-Nam

Urza, Lord High Artificer

Activate Trazyn using Mana Crypt's ability by tapping it, adding {C}{C}.
Activate Trazyn using Farmstead Gleaner's ability by paying {2} and untapping it, putting a +1/+1 counter on Trazyn.
Repeat.

Infinite +1/+1 counters on a creature

Farmstead Gleaner

Activate Mystic Sanctuary and Mana Crypt by tapping them, adding {2}{U}.
Cast Ghostly Flicker either from your hand or from the top of your library by paying {2}{U}, blinking Mystic Sanctuary and Mana Crypt.
When Mystic Sanctuary enters untapped, it triggers, putting Ghostly Flicker from your graveyard onto the top of your library.
Repeat.

Infinite magecraft triggers

Infinite landfall triggers

Ghostly Flicker

Mystic Sanctuary

The Reality Chip

Activate Sol Ring by tapping it, adding {C}{C}.
Cast Mana Crypt by paying {0}.
Displacer Kitten triggers, blinking Ancestral Statue.
When Ancestral Statue enters the battlefield, it triggers, returning Sol Ring from the battlefield to your hand.
Activate Mana Crypt by tapping it, adding {C}{C}.
Cast Sol Ring by paying {1}.
Displacer Kitten triggers, blinking Ancestral Statue.
When Ancestral Statue enters the battlefield, it triggers, returning Mana Crypt from the battlefield to your hand.
Repeat.

Ancestral Statue

Activate Mana Crypt by tapping it, adding {C}{C}.
Activate Voltaic Key by paying {1} and tapping it, targeting Mana Crypt.
Locus of Enlightenment triggers, copying Voltaic Key's ability, targeting Voltaic Key.
Resolve both Voltaic Key abilities, untapping it and Mana Crypt.
Repeat.

Infinite untap of artifacts you control

Infinite mana artifacts you control can produce

The Enigma Jewel // Locus of Enlightenment

Voltaic Key

Activate Tezzeret's first loyalty ability by putting a loyalty counter on it, targeting Mana Crypt and The Peregrine Dynamo.
Holding priority, activate Mana Crypt by tapping it, adding {C}{C}.
Activate The Peregrine Dynamo by paying {1} and tapping it, copying Tezzeret's ability, targeting Mana Crypt and The Peregrine Dynamo.
Resolve the copy of Tezzeret's ability, untapping Mana Crypt and The Peregrine Dynamo.
Repeat from step 2.

Tezzeret the Seeker

The Peregrine Dynamo

Activate Mana Crypt by tapping it, adding {C}{C}{C}
Activate Words of Wind by paying {1}.
Cast the artifact in your hand by paying its mana cost.
Flubs triggers, causing you to return Mana Crypt from the battlefield to your hand, and causing each opponent to return a permanent they control from the battlefield to their hand due to Words of Wind.
Activate Words of Wind by paying {1}.
Cast Mana Crypt by paying its mana cost.
Flubs triggers, causing you to return the artifact cast in step 3 from the battlefield to your hand, and causing each opponent to return a permanent they control from the battlefield to their hand due to Words of Wind.
Repeat.

Flubs, the Fool

Cast Banishing Knack by paying {U}, targeting Battered Golem.
Activate Mana Crypt by tapping it, adding {C}{C}.
Activate Battered Golem by tapping it, returning Mana Crypt from the battlefield to your hand.
Cast Mana Crypt by paying {0}.
Mana Crypt enters the battlefield, triggering Battered Golem, untapping Battered Golem.
Repeat from step 2.

Battered Golem

Banishing Knack

Cast Mana Crypt by paying its mana cost.
Forensic Gadgeteer triggers, creating a Clue token.
Activate Urza's first ability by tapping the Clue, adding {U}.
Activate Mana Crypt by tapping it, adding {C}{C}.
Activate Words of Wind by paying {1}, replacing the next card you would draw by causing each player to return a permanent to their hand instead.
Activate the Clue by paying {1} and sacrificing it, causing you to return Mana Crypt from the battlefield to your hand, and causing each opponent to return a permanent they control from the battlefield to their hand due to Words of Wind.
Repeat.

Forensic Gadgeteer

Activate Mana Crypt by tapping it, adding {C}{C}.
Activate Words of Wind by paying {1}, causing each player to return a permanent from the battlefield to their hand whenever you would next draw a card this turn.
Cast Ornithopter by paying {0}.
Vedalken Archmage triggers, causing each player to return a permanent from the battlefield to their hand, with you returning Mana Crypt, due to Words of Wind.
Activate Words of Wind by paying {1}, causing each player to return a permanent from the battlefield to their hand whenever you would next draw a card this turn.
Cast Mana Crypt by paying {0}.
Vedalken Archmage triggers, causing each player to return a permanent from the battlefield to their hand, with you returning Ornithopter, due to Words of Wind.
Repeat.

Vedalken Archmage

Ornithopter

Activate Mana Crypt by tapping it, adding {C}{C}.
Activate Words of Wind by paying {1}, causing each player to return a permanent from the battlefield to their hand whenever you would next draw a card this turn.
Cast Jeweled Lotus by paying {0}.
Vedalken Archmage triggers, causing each player to return a permanent from the battlefield to their hand, with you returning Mana Crypt, due to Words of Wind.
Activate Words of Wind by paying {1}, causing each player to return a permanent from the battlefield to their hand whenever you would next draw a card this turn.
Cast Mana Crypt by paying {0}.
Vedalken Archmage triggers, causing each player to return a permanent from the battlefield to their hand, with you returning Jeweled Lotus, due to Words of Wind.
Repeat.

Activate Mana Crypt by tapping it, adding {C}{C}.
Activate Words of Wind by paying {1}, causing each player to return a permanent from the battlefield to their hand whenever you would next draw a card this turn.
Cast Lotus Petal by paying {0}.
Vedalken Archmage triggers, causing each player to return a permanent from the battlefield to their hand, with you returning Mana Crypt, due to Words of Wind.
Activate Words of Wind by paying {1}, causing each player to return a permanent from the battlefield to their hand whenever you would next draw a card this turn.
Cast Mana Crypt by paying {0}.
Vedalken Archmage triggers, causing each player to return a permanent from the battlefield to their hand, with you returning Lotus Petal, due to Words of Wind.
Repeat.

Lotus Petal

Tap Crypt to add {2} to your mana pool.
Pay {1} Karn's ability on Mana Crypt to make it a 0/0 Artifact Creature.
Crypt dies, triggering Station's untap trigger.
Tap Station to return Mana Crypt to the battlefield.
You have {C} floating.
Repeat until you have enough colorless mana.

Infinite death triggers

Salvaging Station

Karn, Silver Golem

Activate Mana Crypt by tapping it, adding {C}{C}.
Activate Words of Wind by paying {1}, causing each player to return a permanent from the battlefield to their hand whenever you would next draw a card this turn.
Cast Memnite by paying {0}.
Vedalken Archmage triggers, causing each player to return a permanent from the battlefield to their hand, with you returning Mana Crypt, due to Words of Wind.
Activate Words of Wind by paying {1}, causing each player to return a permanent from the battlefield to their hand whenever you would next draw a card this turn.
Cast Mana Crypt by paying {0}.
Vedalken Archmage triggers, causing each player to return a permanent from the battlefield to their hand, with you returning Memnite, due to Words of Wind.
Repeat.

Memnite

Cast Banishing Knack by paying {U}, targeting Steelfin Whale.
Activate Mana Crypt by tapping it, adding {C}{C}.
Activate Steelfin Whale by tapping it, returning Mana Crypt from the battlefield to your hand.
Cast Mana Crypt by paying {0}.
Mana Crypt enters the battlefield, triggering Steelfin Whale, untapping Steelfin Whale.
Repeat from step 2.

Steelfin Whale

Activate Mana Crypt by tapping it, adding {C}{C}.
Activate Words of Wind by paying {1}, causing each player to return a permanent from the battlefield to their hand whenever you would next draw a card this turn.
Cast Phyrexian Walker by paying {0}.
Vedalken Archmage triggers, causing each player to return a permanent from the battlefield to their hand, with you returning Mana Crypt, due to Words of Wind.
Activate Words of Wind by paying {1}, causing each player to return a permanent from the battlefield to their hand whenever you would next draw a card this turn.
Cast Mana Crypt by paying {0}.
Vedalken Archmage triggers, causing each player to return a permanent from the battlefield to their hand, with you returning Phyrexian Walker, due to Words of Wind.
Repeat.

Phyrexian Walker

Activate Mana Crypt by tapping it, adding {C}{C}.
Activate Pentavus's first ability by paying {1} and removing a +1/+1 counter from it, creating a 1/1 Pentavite creature token.
Activate Pentavus's second ability by paying {1} and sacrificing the Pentavite.
When the Pentavite dies, Dross Scorpion triggers, untapping Mana Crypt.
Resolve the Pentavus ability, putting a +1/+1 counter on it.
Repeat.

Infinite sacrifice triggers

Pentavus

Dross Scorpion

Cast Retraction Helix by paying {U}, targeting Steelfin Whale.
Activate Mana Crypt by tapping it, adding {C}{C}.
Activate Steelfin Whale by tapping it, returning Mana Crypt from the battlefield to your hand.
Cast Mana Crypt by paying {0}.
When Mana Crypt enters the battlefield, Steelfin Whale triggers, untapping Steelfin Whale.
Repeat from step 2.

Retraction Helix

Activate Sol Ring by tapping it, adding {C}{C}.
Cast Mana Crypt by paying {0}.
Displacer Kitten triggers, blinking Brinelin.
When Brinelin enters the battlefield, it triggers, returning Sol Ring from the battlefield to your hand.
Activate Mana Crypt by tapping it, adding {C}{C}.
Cast Sol Ring by paying {1}.
Displacer Kitten triggers, blinking Brinelin.
When Brinelin enters the battlefield, it triggers, returning Mana Crypt from the battlefield to your hand.
Repeat.

Brinelin, the Moon Kraken

Activate Mana Crypt by tapping it, adding {C}{C}.
Activate Words of Wind by paying {1}, causing each player to return a permanent from the battlefield to their hand whenever you would next draw a card this turn.
Cast Shield Sphere by paying {0}.
Vedalken Archmage triggers, causing each player to return a permanent from the battlefield to their hand, with you returning Mana Crypt, due to Words of Wind.
Activate Words of Wind by paying {1}, causing each player to return a permanent from the battlefield to their hand whenever you would next draw a card this turn.
Cast Mana Crypt by paying {0}.
Vedalken Archmage triggers, causing each player to return a permanent from the battlefield to their hand, with you returning Shield Sphere, due to Words of Wind.
Repeat.

Shield Sphere

Activate Mana Crypt by tapping it, adding {C}{C}.
Activate Thermal Navigator by sacrificing Mana Crypt, giving Thermal Navigator flying until end of turn.
Activate Emry by tapping it, allowing yourself to cast Mana Crypt from your graveyard this turn.
Cast Mana Crypt from your graveyard by paying {0}.
When you cast Mana Crypt, Mirran Spy triggers, untapping Emry.
Mana Crypt resolves.
Repeat any number of times.
Once you have infinite colorless mana, you may repeat the loop targeting any castable artifact card in your graveyard in step 3 each time.
You may also skip step 2 to leave your artifacts on the battlefield, or you may sacrifice Thermal Navigator in step 2 and recast it in step 4 for infinite ETB, LTB, sacrifice, and death triggers.

Cast all colorless artifacts from your graveyard any number of times

Emry, Lurker of the Loch

Mirran Spy

Thermal Navigator

Activate Mana Crypt by tapping it, adding {C}{C}.
Activate Rusted Slasher by sacrificing Mana Crypt, regenerating Rusted Slasher.
Activate Emry by tapping it, allowing yourself to cast Mana Crypt from your graveyard this turn.
Cast Mana Crypt from your graveyard by paying {0}.
When you cast Mana Crypt, Mirran Spy triggers, untapping Emry.
Mana Crypt resolves.
Repeat any number of times.
Once you have infinite colorless mana, you may repeat the loop targeting any castable artifact card in your graveyard in step 3 each time.
You may also skip step 2 to leave your artifacts on the battlefield, or you may sacrifice Rusted Slasher in step 2 and recast it in step 4 for infinite ETB, LTB, sacrifice, and death triggers.

Rusted Slasher

Activate Mana Crypt by tapping it, adding {C}{C}.
Activate Rimewind Taskmage by paying {1} and tapping it, targeting itself.
Illusionist's Bracers triggers, copying Rimewind Taskmage's ability, targeting Mana Crypt.
Resolve both abilities, untapping Rimewind Taskmage and Mana Crypt.
Repeat.

Infinite mana permanents you control can produce

Rimewind Taskmage

Illusionist's Bracers

Cast Mana Crypt by paying its mana cost.
Activate Mana Crypt by tapping it, adding {C}{C}.
Activate The Tenth Doctor by paying at most {1}, removing three time counters from Reality Strobe.
Reality Strobe triggers, causing you to cast it from exile without paying its mana cost.
Resolve Reality Strobe, returning Mana Crypt from the battlefield to your hand, and then exiling Reality Strobe with three time counters on it.
Repeat.

The Tenth Doctor

Reality Strobe

Agatha of the Vile Cauldron

Activate Mana Crypt by tapping it, adding {C}{C}.
Activate Thopter Foundry by paying {1} and sacrificing Mana Crypt, creating a 1/1 Thopter artifact creature token and causing you to gain 1 life.
When the Thopter enters the battlefield, Blasting Station triggers, untapping Blasting Station.
Activate Blasting Station by tapping it and sacrificing the Thopter.
When the Thopter dies, Salvaging Station triggers, untapping Salvaging Station.
Resolve the Blasting Station ability, dealing 1 damage to any target.
Activate Salvaging Station by tapping it, returning Mana Crypt from your graveyard to the battlefield.
Repeat.

Thopter Foundry

Blasting Station

Cast Aminatou by paying {W}{U}{B}.
When Aminatou enters the battlefield, Cadric triggers.
Holding priority, activate Mana Crypt by tapping it, adding {C}{C}.
Resolve the Cadric trigger, causing you to pay {1} to create a token copy of Aminatou.
Activate Aminatou's second loyalty ability by removing a loyalty counter from it, blinking Mana Crypt.
Activate the token Aminatou's second loyalty ability by removing a loyalty counter from it, blinking the nontoken Aminatou.
Repeat from step 2.

Infinite blinking of permanents

Infinite mana permanents you control that enter the battlefield untapped can produce

Infinite copies of legendary permanents you own in play until end of turn

Infinite mana lands you control can produce

Cadric, Soul Kindler

Aminatou, the Fateshifter

Activate Mana Crypt's equip ability by paying {0}, targeting Cephalid Illusionist.
Cephalid Illusionist triggers, causing you to mill three cards.
Resolve the Mana Crypt ability, attaching it to Cephalid Illusionist.
Repeat.

Bludgeon Brawl

Cephalid Illusionist

At the beginning of your upkeep, Panoptic Mirror triggers.
Holding priority, activate Mana Crypt by tapping it, adding {C}{C}.
Activate Strionic Resonator by paying {2} and tapping it, copying Panoptic Mirror's trigger.
Resolve the copy of Panoptic Mirror's trigger, casting a copy of Ghostly Flicker without paying its mana cost.
Resolve the copy of Ghostly Flicker, blinking Mana Crypt and Strionic Resonator.
Repeat from step 2.

Panoptic Mirror

Strionic Resonator

At the beginning of your upkeep, Panoptic Mirror triggers.
Holding priority, activate Mana Crypt by tapping it, adding {C}{C}.
Activate Lithoform Engine's first ability by paying {2} and tapping it, copying Panoptic Mirror's trigger.
Resolve the copy of Panoptic Mirror's trigger, casting a copy of Ghostly Flicker without paying its mana cost.
Resolve the copy of Ghostly Flicker, blinking Mana Crypt and Lithoform Engine.
Repeat from step 2.

Lithoform Engine

Activate Mystic Sanctuary and Mana Crypt by tapping them, adding {C}{C}{U}.
Cast Ghostly Flicker from the top of your library by paying {2}{U}, blinking Mystic Sanctuary and Mana Crypt.
When Mystic Sanctuary enters untapped, it triggers, putting Ghostly Flicker from your graveyard onto the top of your library.
Repeat.

Experimental Frenzy

Activate Mana Crypt by tapping it, adding {C}{C}.
Activate Phyrexian Altar by sacrificing Aether Channeler, adding one mana of any color.
Cast the historic permanent from your hand by paying its mana cost.
Teshar triggers, returning Aether Channeler from your graveyard to the battlefield.
When Aether Channeler enters the battlefield, it triggers, returning Mana Crypt from the battlefield to your hand.
Activate Phyrexian Altar by sacrificing Aether Channeler, adding one mana of any color.
Cast Mana Crypt by paying {1}.
Teshar triggers, returning Aether Channeler from your graveyard to the battlefield.
When Aether Channeler enters the battlefield, it triggers, returning the historic permanent cast in step 3 from the battlefield to your hand.
Activate Phyrexian Altar by sacrificing Aether Channeler, adding one mana of any color.
Repeat from step 3.

Teshar, Ancestor's Apostle

Phyrexian Altar

Cast Mana Crypt by paying {0}.
Mana Crypt enters the battlefield as a copy of Cavalier of Dawn.
Copy of Cavalier of Dawn enter-the-battlefield ability triggers, destroying itself and creating you a 3/3 Golem token.
Copy of Cavalier of Dawn dies, triggering itself, returning Mana Crypt from your graveyard to your hand.
Repeat.

Infinite creature tokens

Cavalier of Dawn

Infinite Reflection

March of the Machines

Activate Altar of Dementia by sacrificing Aether Channeler, causing target player to mill cards equal to Aether Channeler's power.
Activate Mana Crypt by tapping it, adding {C}{C}.
Cast the other artifact with MV<=2 by paying at most {2}.
Teshar triggers, returning Aether Channeler from your graveyard to the battlefield.
When Aether Channeler enters the battlefield, it triggers, returning Mana Crypt from the battlefield to your hand.
Activate Altar of Dementia by sacrificing Aether Channeler, causing target player to mill cards equal to Aether Channeler's power.
Cast Mana Crypt by paying {0}.
Teshar triggers, returning Aether Channeler from your graveyard to the battlefield.
When Aether Channeler enters the battlefield, it triggers, returning the other artifact from the battlefield to your hand.
Repeat.

Infinite mill

Artifact with MV<=2 that has a generic mana cost

Altar of Dementia

Activate Mana Crypt by tapping it, adding {C}{C}.
Activate Acorn Catapult by paying {1} and tapping it, targeting a creature an opponent controls with toughness equal to one.
Holding priority, activate Krark-Clan Ironworks twice by sacrificing Mana Crypt and Acorn Catapult, adding {C}{C}{C}{C}.
Resolve the Acorn Catapult ability, dealing 1 damage to the creature, causing it to die due to having zero toughness, and causing its controller to create a 1/1 Squirrel creature token.
When the opponent's creature dies, Glissa triggers twice, returning Acorn Catapult and Mana Crypt from your graveyard to your hand.
Cast Acorn Catapult and Mana Crypt by paying {4}.
Repeat.


Infinite death triggers for target opponent

Infinite ETB for target opponent

Infinite LTB for target opponent

Infinite sacrifice triggers for target opponent

Glissa, the Traitor

Acorn Catapult

Drivnod, Carnage Dominus

Activate Mana Crypt by tapping it, adding {C}{C}.
Activate Makeshift Munitions by paying {1} and sacrificing Mana Crypt, dealing 1 damage to any target.
Activate Emry by tapping it, allowing you to cast Mana Crypt from your graveyard this turn.
Cast Mana Crypt from your graveyard by paying {0}.
Jeskai Ascendancy's first and second abilities trigger.
Resolve the first trigger, causing creatures you control to get +1/+1 until end of turn and untapping all creatures you control.
Resolve the second trigger, allowing you to loot.
Repeat.

Infinite damage

Infinite looting

Infinitely large creatures you control until end of turn

Infinite self-discard triggers

Makeshift Munitions

Jeskai Ascendancy

Tap Barrage Ogre, sacrificing Mana Crypt to deal 2 damage to any target.
Tap Emry, targeting Mana Crypt.
Cast Mana Crypt.
Jeskai Ascendancy triggers, allowing you to loot.
Jeskai Ascendancy triggers, untapping all creatures you control and giving them +1/+1 until end of turn.
Repeat.

Combos with "Mana Crypt"